The movie, about the life of famous dressmaker Reynolds Woodcock (Day-Lewis) and his sister Cyril, has been receiving Oscar buzz.

In an exclusive behind-the-scenes clip provided to INSIDER, costume designer Mark Bridges details how all of the garments in the movie were made from scratch.

Woodcock and his sister dressed members of the royal family, celebrities, socialites and more in 1950s London.

"For a long time we avoided things like strapless dresses, which were huge in the '50s. But at some meeting or at some point, I'd heard from Daniel that Reynolds would have thought that that was vulgar," said Bridges.

Bridges says he's most proud that all of the outfits work in each scene without overshadowing any one of them.

"Phantom Thread" is currently in theaters. You can watch the behind-the-scenes video below.